Step 1: Analyze each species for unpaired electrons
Step 2: Count the species with one unpaired electron
Species with one unpaired electron:
\[ C_2^-, \, O_2^-, \, H_2^+, \, He_2^+. \]
Total number = 4.
Thus, the correct Answer is 4.
Match the LIST-I with LIST-II:
Choose the correct answer from the options given below :
The number of molecules/ions that show linear geometry among the following is _____. SO₂, BeCl₂, CO₂, N₃⁻, NO₂, F₂O, XeF₂, NO₂⁺, I₃⁻, O₃
If \[ \frac{dy}{dx} + 2y \sec^2 x = 2 \sec^2 x + 3 \tan x \cdot \sec^2 x \] and
and \( f(0) = \frac{5}{4} \), then the value of \[ 12 \left( y \left( \frac{\pi}{4} \right) - \frac{1}{e^2} \right) \] equals to: